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Cisco 6100 Series IP DSL Switches

Field Notice: *Expired* FN - 5448 - Cisco 6100 Platform Release 2.3.1 Improves Data Throughput


Revised July 25, 2007

June 16, 1999

NOTICE:

THIS FIELD NOTICE HAS BEEN ARCHIVED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE, WARRANTY OR SUPPORT. USE OF THE INFORMATION ON THIS FIELD NOTICE OR MATERIALS LINKED FROM THIS FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.


Products Affected

Product

Remarks

Cisco 6100

This field notice affects all previous releases earlier than and including 2.3.0.

Problem Description

The Cisco 6100 trained downstream rate is less than earlier releases in the range of 11000 ft. to 15000 ft. when provisioned with zero dB downstream margin. Cisco 6100 release 2.3.1 corrects this problem.

Background

Internal testing concluded that performance capabilities could be increased with a software modification. Release 2.3.1 increases throughput performance for customers in the 11-16Kft range.

This defect has Cisco bug ID CSCdm31593 (registered customers only) .

Problem Symptoms

Downstream training rates achieved in the range of 11000ft to 16000ft were less than optimal with the tables used in release 2.3.0.

Line            2.3             2.3.1
Length          Bit Rate        Bit Rate
-----           -----           -----
11200           1600            2560
11600           1600            2560
11800           1280            2560
12000           1280            2240
12400           1280            2240
12600           960             2240
12800           640             1920
13200           640             1920
13400           512             1600
14000           512             1280
14800           512             1280
15000           512             960
15200           512             960
15400           512             512

Workaround/Solution

Upgrade to Cisco 6100 release 2.3.1 from the Access Products Software Center (registered customers only) . From this page, select the '6100 Series' to find the latest version.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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